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3 years ago

Can someone help me with this question please.

Mathematics

1 answer:

Daniel [21]3 years ago

7 0

For part A. 0.85

For part b. 11.9

Explain

Cost of each track in album A= total cost downloading album a/ total number of track

The problem give us a has 11 trackers and the total cost of download is 9.35 pounds

9.35/11

= 0.85

Now we are given each track cost in album b cost the same as track on A

Cost of each track in album B is 0.85

Now we are given if Jane download album B , B will be 14 tracks

Total cost of downloading is album B= number of tracks in album Bx cost of each track in album B

14x0.85 pound

= 11.9

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Answer:

-9/5

Step-by-step explanation:

I am pretty sure this is it and hope it helps

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3 years ago

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tekilochka [14]

Answer:

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Step-by-step explanation:

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3 years ago

Problem A. Consider the following initial value problem for a damped driven linear oscillator: m 2 + b** + kx} = f sin(St); x(0)

skad [1K]

Answer:

a = L

b = MT^(-1)

c = LT^(-1)

k = MT^(-2)

f = MLT^(-2)

S = T^(-1)

Step-by-step explanation:

x (0) = a

x is denoted by displacement in vibration analysis hence attains units of x.

Hence, a = L

b is the damping coefficient:

$b = \frac{F}{\frac{dx}{dt} } \\= MLT^(-2) / LT^(-1)\\= MT^(-1)$

x'(0) = c

dx/dt = velocity hence c attains the units of velocity

c = LT^(-1)

Coefficient k is the stiffness:

$k = \frac{F}{x} = \frac{MLT^(-2)}{L} = MT^(-2)$

Coefficient f is the magnitude of the exciting force

$F = m*acceleration = MLT^(-2)$

Coefficient S is the angular frequency

angular frequency is displacement in radians per seconds; hence,

S = T^(-1)

7 0

3 years ago

I need help with 10 to 14

Zigmanuir [339]

Answer:

10- It is linear and the constant of proportionality is $6

11- x-intercept(s): (5,0)

y-intercept(s): (0,−2)

12- y-intercept(s): (0,3)

Slope: -2

13- B) 2/3

14- C) 2

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3 years ago

Raphael had 5 hits in 7 at bats. If he continues this pattern, how many hits will he have in 210 at bats?

devlian [24]

So it tell us that he is able to get 5 hits out of 7 and to find how much he could make if 210 chances
$\frac{5}{7} = \frac{x}{210}$

We solve what can be solved
$0.7 = \frac{x}{210}$

Then we leave our variable alone
$0.7 *210=x$

Last we solve
$x=147$

In this case we can see that he could make 147 hits out of 210 bats.

5 0

3 years ago